At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

What is black when you buy it, red when you use it, and gray when you throw it away?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

No matter how little or how much you use me, you change me every month. What am I?

What is the centre of gravity?

You bought me for dinner but never eat me. What am I?

What is both possible and impossible at the same time?